[Bug target/86197] New: POWERPC: float128 parameter passing

[lei at ca dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86197

Bug ID: 86197
   Summary: POWERPC: float128 parameter passing
   Product: gcc
   Version: 7.3.0
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: target
  Assignee: unassigned at gcc dot gnu.org
  Reporter: lei at ca dot ibm.com
  Target Milestone: ---

Float128 should be considered qualified vector arguments and should be passed
in vector registers for homogeneous aggregates of up to 8 members.

Currently for homogeneous aggregates of 5+, they are being passed via the
stack.

$ cat a.c

struct E5 {
  __float128 a[5];
};

__float128 testfp128_05(struct E5 a) {
return a.a[4];
}


Generated asm:

testfp128_05:
std 3,32(1)
std 4,40(1)
std 5,48(1)
std 6,56(1)
std 7,64(1)
std 8,72(1)
std 9,80(1)
std 10,88(1)
lxv 34,96(1)
blr


Compiler version: 
gcc (GCC) 7.3.0

[Bug libgcc/63335] New: GCC:failures for vector double on calls to bif vec_[all|any]_[nge|nle]

[lei at ca dot ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63335

Bug ID: 63335
   Summary: GCC:failures for vector double on calls to bif
vec_[all|any]_[nge|nle]
   Product: gcc
   Version: 4.9.2
Status: UNCONFIRMED
  Severity: normal
  Priority: P3
 Component: libgcc
  Assignee: unassigned at gcc dot gnu.org
  Reporter: lei at ca dot ibm.com

Calls to the following vector bifs fails with gcc with type vector double. 
Passes for vector float.

The same failures are on both BE and LE machines.

vec_all_nge
vec_any_nge
vec_all_nle
vec_any_nle

-

RELEASE LEVEL INFO: 

Fails on both gcc 4.8.2 and 4.9.2

$ gcc -v
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/powerpc64le-linux-gnu/4.8/lto-wrapper
Target: powerpc64le-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 4.8.2-19ubuntu1'
--with-bugurl=file:///usr/share/doc/gcc-4.8/README.Bugs
--enable-languages=c,c++,java,go,d,fortran,objc,obj-c++ --prefix=/usr
--program-suffix=-4.8 --enable-shared --enable-linker-build-id
--libexecdir=/usr/lib --without-included-gettext --enable-threads=posix
--with-gxx-include-dir=/usr/include/c++/4.8 --libdir=/usr/lib --enable-nls
--with-sysroot=/ --enable-clocale=gnu --enable-libstdcxx-debug
--enable-libstdcxx-time=yes --enable-gnu-unique-object --disable-libmudflap
--disable-libsanitizer --disable-libquadmath --enable-plugin --with-system-zlib
--disable-browser-plugin --enable-java-awt=gtk --enable-gtk-cairo
--with-java-home=/usr/lib/jvm/java-1.5.0-gcj-4.8-ppc64el/jre --enable-java-home
--with-jvm-root-dir=/usr/lib/jvm/java-1.5.0-gcj-4.8-ppc64el
--with-jvm-jar-dir=/usr/lib/jvm-exports/java-1.5.0-gcj-4.8-ppc64el
--with-arch-directory=ppc64el --with-ecj-jar=/usr/share/java/eclipse-ecj.jar
--enable-objc-gc --enable-secureplt --with-cpu=power7 --with-tune=power8
--disable-multilib --enable-multiarch --disable-werror --with-long-double-128
--enable-checking=release --build=powerpc64le-linux-gnu
--host=powerpc64le-linux-gnu --target=powerpc64le-linux-gnu
Thread model: posix
gcc version 4.8.2 (Ubuntu 4.8.2-19ubuntu1)

$ /opt/at8.0/bin/gcc -v
Using built-in specs.
COLLECT_GCC=/opt/at8.0/bin/gcc
COLLECT_LTO_WRAPPER=/opt/at8.0/libexec/gcc/powerpc64le-linux-gnu/4.9.2/lto-wrapper
Target: powerpc64le-linux-gnu
Configured with:
/home/tuliom/at8.0-0/at8.0-0.ubuntu-14_ppc64le_ppc64le/sources/gcc/configure
--build=powerpc64le-linux-gnu --host=powerpc64le-linux-gnu
--target=powerpc64le-linux-gnu --with-cpu=default64 --prefix=/opt/at8.0
--with-long-double-128 --enable-secureplt --disable-multilib
--enable-threads=posix --enable-languages=c,c++,fortran,go
--enable-__cxa_atexit --enable-shared --enable-checking=release --enable-lto
--enable-gnu-indirect-function --enable-initfini-array
--with-gmp-include=/opt/at8.0/include --with-gmp-lib=/opt/at8.0/lib64
--with-mpfr-include=/opt/at8.0/include --with-mpfr-lib=/opt/at8.0/lib64
--with-mpc-include=/opt/at8.0/include --with-mpc-lib=/opt/at8.0/lib64
--without-ppl --without-cloog --without-libelf
--with-host-libstdcxx='-L/opt/at8.0/lib64 -lstdc++ -lsupc++ -lgmp -lgmpxx -lm'
--with-cpu=power7 --with-tune=power8
Thread model: posix
gcc version 4.9.2 20140812 (Advance-Toolchain-at8.0) [ibm/gcc-4_9-branch,
revision: 213889 merged from gcc-4_9-branch, revision 213872] (GCC)

-

STEPS TO REPRODUCE: (Reduce the code in the README.ksh file as much as
possible)

$ gcc -m64 -fabi-version=4 -mcpu=power8 a.c
$ a.out

-

ACTUAL OUTPUT:

99.00 99.00
Actual: 1 Expected: 0
return code: 1

-

EXPECTED OUTPUT:

return code: 0

-

TESTCASE SOURCE: 

$ cat a.c
#include 
#include 

#ifdef _TEST_FLOAT
   vector float vec = (vector float ) {99.0, 99.0, 99.0, 99.0};
#else
   vector double vec = (vector double) {99.0, 99.0};
#endif

int main() {
int actual = -1;

actual = vec_all_nge(vec, vec);
if ( actual != 0) {
printf("Actual: %d Expected: 0\n", actual);
return 1;
}

return 0;
}